Perhaps I am not understanding you correctly but, if not Seán, I hate to be the one to inform you that if you do not listen to Beethoven in HIP then you definitely are odd!!
First off, I do believe that you know the Gardiner cycle.
The van Immerseel cycle is, in my humble opinion, also a very good one indeed.
Then there are also wonderful LvB cycles by Bruggen [X 2], Goodman, Hogwood and Norrington that I personally know of.
One has always to remember the context of the time and the instruments that a composer of his time was writing with and for. He was writing with specific sonorities and timbres in mind. He had a certain sound in his mind as he composed the music. Modern instruments are very different to those of Beethoven’s time. This must always be borne in mind with "older" music.
This is by no means a lecture but a suggestion that you may be limiting your sonic and interpretative experience by merely listening to this music played on Modern Instruments.